* “Vanish is a research system designed to give users control over the lifetime of personal data stored on the web or in the cloud. Specifically, all copies of Vanish encrypted data â€” even archived or cached copies â€” will become permanently unreadable at a specific time, without any action on the part of the user or any third party or centralized service. For example, using the Firefox Vanish plugin, a user can create an email, a Google Doc document, a Facebook message, or a blog comment â€” specifying that the document or message should “vanish” in 8 hours.” Via